Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Build a Photo Browser iPhone App Connecting to an API using OAuth Showing Photos in a Collection View

Posted by Gaetano Isidori
Gaetano Isidori
3,451 Points

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '***-[NSURL initWithString:relativeToURL

this is my line of code: NSURL *url = [[NSURL alloc] initWithString:_photo[@"images"][@"standard_resoloution"][@"url"]];

Im having trouble figuring out what wrong here can someone please help me?